Listen to Robert Emmerich introduce The Big Apple, a hit song from 1937. Music written by Bob and performed by Tommy Dorsey's Clambake Seven with Bob on piano. Lyrics written by Buddy Bernier and sung by Edythe Wright. Audio provided by Dorothy Emmerich.

“I drink straight out of the wine bottle while cooking. That’s what they mean by reducing it”

Some recipes call for “wine reduction.” A joke is:

“I drink straight out of the wine bottle while cooking. I think that’s what they mean by reducing it.”

“I’m not sure that’s what they mean by reducing the wine” was posted on Twitter on July 29, 2013, with an illustration of a husband saying this and reading a cookbook, and a wife drinking wine straight from the bottle. “I drink straight outta of the wine bottle while cooking. I think that’s what they mean by reducing it” was posted on Twitter by Eve on December 26, 2016.

Wikipedia: Reduction (cooking)
In cooking, reduction is the process of thickening and intensifying the flavor of a liquid mixture such as a soup, sauce, wine, or juice by simmering or boiling.

Reduction is performed by simmering or boiling a liquid such as stock, fruit or vegetable juices, wine, vinegar, or a sauce until the desired volume is reached by evaporation. This is done without a lid, enabling the vapor to escape from the mixture. Different components of the liquid will evaporate at slightly different temperatures, and the goal of reduction is to drive away those with lowest points of evaporation. It thus can be seen as a form of distillation, capturing those components that have the highest boiling point.